Strange postfix error

[findafriend]

Hi

anyone got those strange errors in your var/log/mail.warn :

Mar 19 11:50:36 xxxx postfix/tlsmgr[3614]: warning: request to update table btree:/var/spool/postfix/smtpd_scache in non-postfix directory /var/spool/postfix
Mar 19 11:50:36 xxxx postfix/tlsmgr[3614]: warning: redirecting the request to postfix-owned data_directory /var/lib/postfix
Mar 19 11:50:36 xxxx postfix/tlsmgr[3614]: warning: request to update table btree:/var/spool/postfix/smtp_scache in non-postfix directory /var/spool/postfix
Mar 19 11:50:36 xxxx postfix/tlsmgr[3614]: warning: redirecting the request to postfix-owned data_directory /var/lib/postfix

Is this something i should bother about ?

And this one :

Mar 19 11:51:14 xxxx postfix/smtpd[3612]: warning: 187.21.198.195: address not listed for hostname bb15c6c3.virtua.com.br
Mar 19 11:54:55 xxxx postfix/smtpd[3697]: warning: 122.164.115.167: address not listed for hostname ABTS-TN-dynamic-167.115.164.122.airtelbroadband.in

How can this be configured inside postfix to be ignored ?
using reject_non_fqdn_hostname inside smtpd_recipient_restrictions =
?

BR

MJ